package com.study.extendenum;

public enum BasicOperation implements IOperation {
	PLUS("+"){

		@Override
		public double apply(double x, double y) {
			return x + y;
		}
		
	},
	MINUS("-"){

		@Override
		public double apply(double x, double y) {
			return x - y;
		}
		
	};

	private final String symbol;
	BasicOperation(String symbol){this.symbol = symbol;}
	
	@Override
	public String toString() {
		return symbol;
	}
}
